A model for SS433: precessing jets in an ultra-close binary system.

Details A model for SS433: precessing jets in an ultra-close binary system. A model for SS433: precessing jets in an ultra-close binary system.

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189p..19m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. Vol. 189, p. 19P - 22P

Astronomy and Astrophysics

Astronomy

15

Close Binaries:Emission-Line Objects, Close Binaries:Peculiar Objects, Ss433

Scientific paper

The peculiar spectral features of SS 433 have been attributed to gas jets with velocity ˜c/4, precessing with a ˜160-day period. We propose a mechanism involving a spinning black hole (mass ≳ 5 Msun) accreting from a degenerate dwarf (mass ≲ 0.4 Msun). If the hole's spin axis is oblique with respect to the orbital angular momentum, each vector precesses owing to the Lense-Thirring effect. The jets, being always aligned with the hole's spin axis, sweep out a cone on the sky. The lifetime of the system against gravitational radiation is ˜ 104 yr. The mass loss from the dwarf is highly "super-critical" most of this matter escapes as a wind, and gives rise to the rest-system spectral features.

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